Patents by Inventor John D. Chapman

John D. Chapman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5401490
    Abstract: Novel nucleosides are provided having at least one hydrogen or hydroxide substitutent replaced by a .gamma.-emitting halogen. Methods of preparation of these nucleosides are provided and also a novel non-invasive method for the detection and measurement of tissue hypoxia in mammals.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: March 28, 1995
    Assignee: Alberta Cancer Board
    Inventors: Leonard I. Wiebe, John R. Mercer, John D. Chapman, Rezaul H. Mannan, Vijayalakashmi Somayaji
  • Patent number: 5208060
    Abstract: A pie product (pie dough or pie crust) containing a reduced amount of fat. The pie product contains a hard vegetable fat, and a softer fat. A method of preparing the pie product includes the steps of:(a) preparing a cohesive mass comprising flour, a first-stage fat, and water wherein the first-stage fat is a vegetable fat having a Wiley melting point below 110.degree. F. and a Solid Fat Index at 70.degree. F. and less than or equal to 49, preferably in the range of 20-49; and(b) adding a second stage fat to the mass obtained in step (b) in order to obtain a dough, wherein the second-stage fat is a vegetable fat having a Wiley melting point below 115.degree. F. and a Solid Fat Index at 70.degree. F. in the range of 20 to 73 and wherein fat B is added in a molten state.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: May 4, 1993
    Assignee: Van den Bergh Foods Co., Division of Conopco, Inc.
    Inventors: Peter M. Gautchier, John D. Chapman
  • Patent number: 4166840
    Abstract: The present invention relates to a process for reacting ammonia and wet process phosphoric acid to produce ammonium phosphates, which process comprises feeding the reagents to a vessel comprising two tubular members in fluid flow communication with one another and with a gas disengagement vessel, at least one of said tubular members being generally upright, the ammonia being fed to the basal portion of the upright member, the phosphoric acid being fed to the other tubular member; allowing the resultant reaction mixture to circulate spontaneously up the upright member, through the gas disengagement vessel and through the other member to the upright member; and recovering the ammonium phosphate reaction products from the reaction system.
    Type: Grant
    Filed: November 30, 1976
    Date of Patent: September 4, 1979
    Assignee: Fisons Limited
    Inventor: John D. Chapman